结构性土一维非线性大应变固结半解析解

doi:10.16285/j.rsm.2018.2047

岩土力学 ›› 2020, Vol. 41 ›› Issue (8): 2583-2591.doi: 10.16285/j.rsm.2018.2047

结构性土一维非线性大应变固结半解析解

胡安峰^{1, 2}，周禹杉^{1, 2, 3}，陈缘^{1, 2}，夏长青^{1, 2}，谢康和^{1, 2}

1. 浙江大学滨海和城市岩土工程研究中心，浙江杭州 310058； 2. 浙江大学软弱土与环境土工教育部重点实验室，浙江杭州 310058；3. 浙江大学建筑设计研究院有限公司，浙江杭州 310028

收稿日期:2018-11-07 修回日期:2019-11-15 出版日期:2020-08-14 发布日期:2020-10-17
通讯作者: 周禹杉，女，1993年生，硕士研究生，主要从事为软黏土一维固结理论方面的研究工作。E-mail：twoe@foxmail.com E-mail:anfenghu@zju.edu.cn
作者简介:胡安峰，男，1974年生，博士，副教授，主要从事软土一维固结及桩的动力响应等方面的教学和科研工作
基金资助:
国家自然科学基金（No. 51778572，No. 51978612）

Semi-analytical solutions for one-dimensional nonlinear large strain consolidation of structured soft clay

HU An-feng^{1, 2}, ZHOU Yu-shan^{1, 2, 3}, CHEN Yuan^{1, 2}, XIA Chang-qing^{1, 2}, XIE Kang-he^{1, 2}

1. Research Center of Coastal and Urban Geotechnical Engineering, Zhejiang University, Hangzhou, Zhejiang 310058, China; 2. Key Laboratory of Soft Soils and Geoenvironmental Engineering of Ministry of Education, Zhejiang University, Hangzhou, Zhejiang 310058, China; 3. The Architectural Design and Research Institute of Zhejiang University Co., Ltd., Hangzhou, Zhejiang 310028, China

Received:2018-11-07 Revised:2019-11-15 Online:2020-08-14 Published:2020-10-17
Supported by:
This work was supported by the National Natural Science Foundation of China (51778572, 51978612).

摘要/Abstract

摘要： 以结构性较强的天然饱和软黏土为研究对象，考虑了沉积作用对其自重应力的影响，以及压缩性和渗透性的非线性变化，推导了任意加载条件下结构性土一维大应变固结控制方程，并采用半解析的方法对方程进行求解计算。再将其退化为无结构性的饱和软黏土固结解，与已有的大应变固结解进行了对比，验证了该解的正确性。最后将该半解析解计算结果与小应变固结理论解、不考虑结构性的固结理论解计算结果进行对比分析。结果表明：大应变固结理论的沉降计算值大于小应变固结理论的计算值，且二者的差值随着荷载的增加而增加；当考虑土体的结构性时，地表沉降计算值小于不考虑土体结构性的沉降计算值。

关键词: 结构性土, 大应变, 非线性固结, 半解析解

Abstract: In the analysis of consolidation of naturally saturated soft clay with strong structure, the influence of sedimentation on self-weight stress, the nonlinear variation of compressibility and permeability were considered. The one-dimensional large strain consolidation equations under arbitrary loading conditions were derived and solved by a semi-analytical method. Then the solutions were degraded into solutions of a non-structured saturated soft clay consolidation theory. By comparing the degraded semi-analytical solutions with the existing large strain consolidation solutions, the solutions of the one-dimensional large strain consolidation equations were proved to be right. At last, the consolidation behaviours of semi-analytical solutions were compared with the theoretical solutions of small strain consolidation theory and the the theoretical solution of the consolidation theory without considering the structure. The comparison results show that the settlement at any time of large strain consolidation theory is greater than that of the small strain consolidation theory, and the difference between the two increases with the increase of the load. When considering the structure of the soft soil, the settlement of large strain consolidation is smaller than the calculated value without considering the soil structure.

Key words: structured soil, large strain, nonlinear consolidation, semi-analytical solutions

中图分类号:

TU 433

胡安峰, 周禹杉, 陈缘, 夏长青, 谢康和, . 结构性土一维非线性大应变固结半解析解[J]. 岩土力学, 2020, 41(8): 2583-2591.

HU An-feng, ZHOU Yu-shan, CHEN Yuan, XIA Chang-qing, XIE Kang-he, . Semi-analytical solutions for one-dimensional nonlinear large strain consolidation of structured soft clay[J]. Rock and Soil Mechanics, 2020, 41(8): 2583-2591.

参考文献

相关文章 15

[1]	江留慧, 李传勋, 杨怡青, 张锐. 变荷载下双层地基一维非线性固结近似解析解[J]. 岩土力学, 2020, 41(5): 1583-1590.
[2]	蒙宇涵, 张必胜, 陈征, 梅国雄, . 线性加载下含砂垫层地基固结分析[J]. 岩土力学, 2020, 41(2): 461-468.
[3]	龚文惠, 赵旭东, 邱金伟, 李逸, 杨晗. 饱和软土大应变自重固结非线性分析[J]. 岩土力学, 2019, 40(6): 2099-2107.
[4]	黄朝煊. 塑料排水板处理地基非线性固结计算研究[J]. 岩土力学, 2019, 40(12): 4819-4827.
[5]	莫品强, 高新慰, 黄子丰, 马丹阳, . 下穿隧道开挖引起的挤土桩沉降控制分析方法[J]. 岩土力学, 2019, 40(10): 3823-3832.
[6]	杨鹏, 蒲诃夫, 宋丁豹. 竖井地基的大应变固结分析[J]. 岩土力学, 2019, 40(10): 4049-4056.
[7]	夏长青，胡安峰，崔军，吕文晓，谢康和, . 饱和软土成层地基一维非线性固结解析解[J]. , 2018, 39(8): 2858-2864.
[8]	李传勋，董兴泉，金丹丹，王玉林，. 考虑起始坡降双层地基的大应变非线性固结[J]. , 2018, 39(5): 1877-1884.
[9]	汪磊，李林忠，徐永福，夏小和，孙德安，. 半透水边界下分数阶黏弹性饱和土一维固结特性分析[J]. , 2018, 39(11): 4142-4148.
[10]	李传勋，王素. 软土一维非线性固结近似解析解[J]. , 2018, 39(10): 3548-3554.
[11]	祝恩阳，李晓强，. 胶结结构性土统一硬化模型[J]. , 2018, 39(1): 112-122.
[12]	张浩，石名磊，郭院成，李永辉,. 边载作用下桥梁基桩-立柱的位移特征与受力分析[J]. , 2017, 38(9): 2683-2692.
[13]	李传勋，董兴泉，金丹丹，谢康和,. 考虑起始水力坡降的软土大变形非线性固结分析[J]. , 2017, 38(2): 377-384.
[14]	解益，李培超，汪磊，孙德安，. 分数阶导数黏弹性饱和土体一维固结半解析解[J]. , 2017, 38(11): 3240-3246.
[15]	李传勋，徐超，谢康和，. 考虑非达西渗流和应力历史的土体非线性固结研究[J]. , 2017, 38(1): 91-100.

Metrics

Viewed

Full text

Abstract

Cited

Shared

Discussed

结构性土一维非线性大应变固结半解析解

Semi-analytical solutions for one-dimensional nonlinear large strain consolidation of structured soft clay

PDF (Chinese)

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

Metrics

本文评价

推荐阅读 10